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Tantalum Capacitors

T491D477K006AH Application Field and Working Principle

Tantalum capacitors are made from a solid electrolyte which contains tantalum powder. They are the most efficient and reliable type of capacitor available, making them a popular choice of component for a variety of applications.

The T491D477K006AH is a general-purpose, commercial grade, high-precision, surface-mount tantalum capacitor with a tolerance of ±13.5% (C < 30 pF) and ±10% (C ≥ 30 pF). The capacitance tolerance is specified with a temperature coefficient of -15%.

T491D477K006AH capacitors have wide application fields. They are designed to suit the highest reliability requirements where a precise value of capacitance and temperature stability are paramount, or when the construction environment has a limited space for the transport of the capacitor’s components. Common applications of T491D477K006AH include portable electronic devices, base stations, radio transceivers, amplifiers, signal processors, and audio equipment.

Working Principle

T491D477K006AH capacitors are constructed in a unique way which imparts high reliability, electrical stability, and mechanical robustness. The capacitor is made up of two electrodes separated by a solid, non-conductive dielectric. Both of the electrodes are made of solid tantalum, which is a highly conductive material. The electrodes are connected to an electrolyte material, typically a mixture of tantalum hydroxide and ethylene glycol.

The solid dielectric allows for extremely low power losses, making it ideal for situations which require a high level of precision and reliability. The combination of the two electrodes and dielectric material provides a perfect environment for efficient capacitance. When a voltage is applied across the terminals of the capacitor, an electric field is generated which creates an electrical charge on both of the electrodes. The amount of charge depends on the size of the electrodes, and the electric field which is created increases as the voltage increases.

The dielectric absorbs the voltage and the electric field causes it to become polarized. This results in an increase in capacitance. Since the dielectric absorbs the voltage, the capacitor is able to act as a short-circuit, allowing the current to flow very quickly from one terminal to the other. The fast-acting property of the capacitor makes it ideal for use in applications which require a large amount of current, such as in power supplies or audio equipment.

In addition to its extremely low power losses, T491D477K006AH capacitors also have high mechanical capability, making them ideal for applications which require a high level of vibration and shock resistance. As well, the capacitors are rated for temperatures up to 125°C, which is well above the operating temperature of most components and circuits.

T491D477K006AH capacitors are a reliable and efficient source of capacitance and are ideal for a wide range of applications. Their stable construction and excellent mechanical properties, combined with their low power losses, make them suitable for a variety of tasks in portable electronic devices, base stations, radio transceivers, amplifiers, signal processors, and audio equipment.

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